Question

the diagram below represents the cell cycle. when cells leave the cell cycle, they exit during ( g_1 ) phase and then enter ( g_0 ) phase, a resting period. most normal cells can leave ( g_0 ) phase and reenter the cell cycle at ( g_1 ) phase before entering ( s ) phase. cancer cells are different because they cannot enter ( g_0 ) phase and are likely to do which of the following? die after completing mitosis mutate during g1 phase fail to complete s phase repeat the cell cycle continuously

Explanation:

Cancer cells cannot enter \(G_0\) phase (a resting phase). The cell cycle has phases like \(G_1\), \(S\), \(G_2\), mitosis, and cytokinesis. If a cell doesn't enter \(G_0\), it will keep going through the active phases of the cell cycle (\(G_1\), \(S\), \(G_2\), mitosis, cytokinesis) repeatedly. Normal cells can rest in \(G_0\), but cancer cells bypass this rest and continue cycling.

• Option 1: Cancer cells are known for uncontrolled growth, not dying after mitosis.
• Option 2: Mutation is not directly related to inability to enter \(G_0\) in the context of this question about cell - cycle progression.
• Option 3: There is no indication from the given information (about \(G_0\) phase) that cancer cells fail to complete \(S\) phase.

Answer:

Repeat the cell cycle continuously.